Compilare: main.cpp: In function 'void ReadInt(int&)': main.cpp:26:40: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fread(buffer,1,bsize,stdin); ^ main.cpp:39:40: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fread(buffer,1,bsize,stdin); ^ main.cpp: In function 'int main()': main.cpp:161:34: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("regat.in","r",stdin); ^ main.cpp:162:36: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("regat.out","w",stdout); ^